Heat-exchange device



June 1 1926.

B. c. MCCLURE ET An.

HEAT EXCHANGE DEVICE Filed July 31. lgz s sheets-sheet 1 I June l 1926.

. 1,587,166 B. C. MCCLURE ET AL HEAT EXCHANGE DEVICE Filed July 51. 1922 3 Sheets-SheetA 2 June l 1926.

HEAT EXCHANGE DEVICE Filed July 31, lsaz 3 Smets-sheet s 1,587,166 B. C. MCCLURE ET AL Patented June 1, 1926.

UNITED STATESA BENJAMIN CARL I'VICCLUEE, 0F SCARSDALE, AND LUTHER BURCHARD MCMILLAN, OF

LARCHMONT, NEW YORK, ASSIGNORS TO JOHNS-MANVILLE INCORPORATED, OF

NEXV YORK, N. Y., A CORPORATON OF NEW YORK.

HEAT-EXCANGE DEVICE.

Application filed July 31,

This invention relates to heat exchange or economizer devices in which the heat of onel 'fluid is imparted to another fluid without commingling the iiuids and without actual contact of the one with the other. Devices o' this character are useful in many arts where conservation or economy of heat is important; for example in connection with dryers, carbonizers and kindred apparatus used in textile and other manufacturing plants for processing and finishing materials, lfabrics, and Completed articles.

rlhe objects of the invention are to provide a heat exchange device of simple and economical construction, having mutually related intertwined passages formed by the assemblage of like units ot partition within a trunk or shell, in such manner that the gaseous currents in the passages repeatedly impinge upon substantially itat surfaces and are thereupon thrown into whirls and edd'ies which assist in eifecting heat transfer lfrom the iiuid in one passage to that in another.

In order to illustrate the invention, typical species of the genus constituting the invention are shown by way of example in the accompanying drawings, in which- Fig. 1 is a perspective view, parts being broken away to show internal structures, of a heat exchange device of one form;

Fig. 2 is a section in elevation on the line Q-Q of Fig. 1;

Fi 3 is a section in plan on the line 3-3 ot Fig. 1;

Fig. t is a transverse section on the line 1f-l of Fig. 2; l

Fig. 5 is a perspective view of one of the Y unit partitions;

Fig. 6 is a perspective view similar to 1 of another -orm of the device;

Fig.`7 is a section in elevation otl the line 7-7 ot Fig. 6;

Fig. 8 is a section in plan on the line 8-8 ot Fig. 6;

Fig. 9 is a transverse section o n the line 9-9 of Fig. 7;

Fig. 10 is a perspective View of a unit partition used in the lorrn of Figs. 6 to 9; Fig. 11-is a diagram perspective view ci the partition assembly of the device die .closed in Fig. vl, Showing .the direc-tien 'ef the fluid .cur-rents; and

Fgj12 is a dfagrern perspective .et .the partit-ien assembly et the type disclosed in Fig.

1922. serial no. 578,580.

Fig. 6, showing the direction of the fluid currents.y l

Referring now to Figs. 1 to 5 and 1,1, an enclosure A having side walls 12 and 13, ends 14, top and bottom walls 15 and 16, and rectangular in cross section as indicated in 4, may be divided into a series of like cells or chambers 17, between substanf tially parallel partition walls entending laterally of the enclosure A formed by said Walls 15 141, 15, 16. Recurrent (shown as alternate) cells or chambers 17 are connected by passageways 18a, Figs. 2 and 3, these passageways for the al ternate series of cells 17 lying along dit- 'lerent pair of Opposite walls 15V, 16, of the enclosure from the similar passages 18? tor the other intervening alternate series, which passages lie along the side walls 12, 13,

'lwo separate and distinct fluid paths thus formed extend throughout vthe length ot the device, one path indicated by arrows in Figs. 1, 2 and 11, entering and leaving the device by means of openings 19 and 2O in the ends 14, and the other y, indicated by arrows in Figs. 1, 2 and 11, entering and leaving the device through openings 21 and 22 in sidewalls 13 and 12 respectively at diagonally opposite points.

,Such cells and passageways may be formed by installing within enclosures A, of which that shown is typical, a series of like unit partitions, preferably integral, each ci which, see Fig.` 5, comprises a relatively large transverse member'a, a narrow longitudinal member I) disposed at right angles to one edge of vmember a, a smaller transverse member c at right angles to the outer free edge of member b, .of suiticient size to cover a rectangular area of which the height is one interior dimension of enclosure A less one dimension of member rp and of which the base is the other dimension of the enelesure A, lese the other dimension 0f member a; When assembled for installation within the eneleeure each Seeeeseve peltiteu is rotated relative te the nest Pfeeedias partition.. .In the elevee illustrated, each Successive eartitien is retateel e 'querter tura Seaside-reti@ ef Fs l1, which Shows Parti' the enta will eXp, these partiti..

Y suitably jeinetl to the enclosure A and to each other at their contacting edges. As best shown in Fig. 2, the joint betiveen the Walls oi the enclosure A and the partitions may be any suitable airor gas-tight uncture adapted to the material ot which the device is made, such as a gain or groove g to receive the edge ot the partition, and a suitable coating ot cement g to seal the joint. so formed. Any other form of juncture between the container A. and the internal partitions may be employed, for instance as referred to below.

rlhe iiuid currents al and ,1/ flowing,` through the device as indicated by dotted and broken lines respectively in Figs. l to 3 and ll are caused. to take undulatory paths lying generally in opposite directions in the cellular spaces. lllithin these spaces the mean central path oi one fior.7 in one series ot cells undulates in an up and doivn direction, and :in the other path through the other lseries ot cells undulates horizontally. The crests ot these undulations are displaced in respect to one current half Wave-length from the crests ot the other current. These currents thus intertwine Within the general space delincd by the enclosure A and are caused to inipinge everywhere respectively upon opposite sides ot the members o, l), c ot the inne partitions, the currents in contact with the opposite sides ot the partitions everywhere traveling at right angles to each other. The changes of direction are frequent, and impingement. against the partitions from tloiv is occasioned at each change of direction.

The f'ariner and meister current tloiving through the device may be expected to condense its moisture on the Walls oit the cells :termed by the partitions a, l), 0,' for instance, current ai. Figs. l and 3, may be a Warnier and meister outtlow current, and current y a colder and oryer intloW current. It will he observed that the form ot the cells through which current :n tloyvs is such as to permit. moisture to collect by gravity on the bottom Wall i6 ot the enclosure A. The moisturc collected may be drained 'from this space in any suitable manner, tor instance by the provision ot holes fle, near one lovver corner ol the device` which is positioned in practice so that this corner will be slightly lower than the remainder ot the device. The drip ma),Y be carried ott' by pipes 7N, Fie: 4, l" rom these holes.

It uill now be understood that the enclosure A may be of any dimensions sutiicient to accommodate an area of the partitions a, Z), o great enough to transfer the heat from one of the currents flowing through the device to the other. The incoming' current y, Figs. l and 2. for instance, may be of cool, dry air and the outgoing current m may be ol Warm. moist air proceeding Yfrom some such device as an evaporator, dryer or carbonizer. .The present illustrations do not memes shoiv the connections relied upon beyond the heat-exchange device A. These connections may be pipes continuing the openings 19, 2t), 2l, 22, these pipes having flanges bolted to the attachment flanges 19, Q0, 2l, 22, etc. Any suitable arrangement which includes the enclosure A so that its passages respectively 'are continuations ot the outgoing' Warm-current passages and connected in the incoming; cold-current passages will correspond to the intended use of the device.

it is to be understood that the precise form of' the unit partition above explained is typical only of many forms by which the interior space ot an enclosure A may be divided into series ot cells, establishing iioiv paths throryh the Walls of which a Warm zuri-ent and a cold current can exchange their heat. F or one inst-anco onlv ot the many variations within the invention, Figs. 6 to l0 inclusive, illustrate a variation ot the partition walls adapted to cause the currents ot one series ot cells to intertwine with the currents of the other series oi cells in three-dimensional spirals, as diagrammed Fig. l2 in perspective, the current in each series of cells impingingupon a laterally extending;- vfall of the partition, thence moving laterally to the lett into another cell, thence downward into another ccll, and then upward into another cell, ete.

In order to divide the space ot the enclosure shown in Fig. 6 at A t'or the effect indicated. in Fie'. l2, a unit partition shown in Fig. l0 may be repeated in assembly with the interior Walls of the enclosure A, each successive unit contacting with the next, .shown in Figs. lf3-9, in a position rotated a quarter-turn from that of the next partition. The unit partition shown in Fig'. 10 comprises a transverse portion (Z, an integral transverse portion e, and an integral transverse portion f, the portion f having' rectangular dimensions corresponding to thc ditit'erence between the interior dimensions respectively ot the enclosure A less the respel-tire dimensions ot' the portion b. The longitudinal width ot the cells formed by repetitions ot the partition shown in Fig. l0 is determined the longitudinal dimension ot' the portion which is ot sutiicient leicht to define the tull inferior dimension ot the enclosure n.

As in the case ol the torni above de scribed, any suitable juncture between the edges of the unit partitions and the interior Wall of the enclosure may be adopted. As best shown in Figs. 6 and 7, for instance, seats for the edges of the partitions may be formed by angle strips f: suitably attached to the inner Walls of the enclosure A. These strips may be cemented or otherwise fastened in place. The meeting joints 7c between the' respective partitions, see Figs. 7 and 8, may also be cemented joints.

By reference to Figs. G and l2 the internal paths et a current 1/ entering through the opening 36 and leaving through the opening 37, and ot the exit current fc entering through the opening 38 and leaving through the opening 89, will be apparent.

In either or' the Jr'orms above explained, the unit partition is impinged upon by the respective currents, and constitutes a septum of a medium through which the current of a higher temperature warms the current of a lower temperature.

It will now be understood that economizer or heat-exchange enclosures such as those typified by the enclosures A or A, and the partitions by which these enclosures are. di-

vided into series oit cells, may vary in construction within wide limits, but we prefer constructions in which the partitions are, first, of like form, and second, et such simplicity ot iorm as to permit making by molding or bending while plastic. The illustrated forms are adapted to be made of sheet material by blankingI and bending operations well adapted to be carried out on thin sheets of the preferred fume-resistant materials. These preferred materials comprise inert mineral substances of water-resistant, acid proof quality, but we are not to be understood as excluding metallic structures, since the constructions by which the enclosures are divided into cells are advantageous to eieient heat-exchange between air, gas or vapor currents without respect to the material of which the cell walls may be composed.

One preferred material for the partitions and walls of the device is an aggregate of asbestos and a binder known to commerce as asbestos wood, and typically consisting of asbestos and Portland cement, with or without an oleaginous impregnation. Such material, glass, some forms oit porcelain and earthen-ware, thin sheets oft suitable metal which may or may not be galvanized, plated, enameled or coated with adherent coats ot' such substances as asbestos and a cement, all lend themselves to utilization :tor the unit partitions above described as well as for the enclosure in which the partitions are erected to constitute the cellular structure. The entire structure shown and described may, il' Idesired, be surrounded by a heat-insulating lagging or casing, not shown, or may be erected within one of the hot chambers ot i the apparatus with which it is used.

rlhe forms illustrated are such as are preferred to be employed when the material ot the outer walls and the piping is asbestos wood.

VJhile the constructions described have been described as made by assembly, it will be clearly understood by those skilled in the art that equivalent structures might well be molded by suitable processes, either in a single piece, or in mating halves or other fractions with integral partition structures including the structure of the interior cells, and it is within our invention to construct the apparatus in such units or partial units.

te claim 1. A heat exchange device comprising a shell, and having therein a series of unit partitions each partition comprising a plurality of parts disposed in angular relationship to each other, each successive partition being rotated a portion of a circumteenee relative to the preceding partition, whereby a plurality of tortuous passageways sepa rated by said partitions are provided. Y

2. In combination, in a heat exchange device, a hollow enclosure and a series of like partitions each characterized by a transverse and a longitudinal member, whereby assembly oit said partitions in mutually dit'- ferent rotative positions in mutual Contact within said enclosure provides aseries of transverse divisions of the internal space, recurrent divisions being connected in series by passageways divided from the intervening divisions of the internal space by said longitudinal members.

3. A partition for use in an enclosure et polygonal internal cross-section and adapted for heat exchange use, said partition having a transverse member adapted for edge Contact with walls of the enclosure in any of several rotative positions, and an integral longitudinal member adapted to Contact with an adjacent similar partition, and thereby to divide off a portion oi the. internal space of the enclosure in a longitudinal sense.

Signed by us at New York city, N. Y., this 18th day ot July, 1922.

BENJAMIN VCARL MCCLURE. LUTHER BUBCHARD MoMILLiY N. 

